Citation: Gui Ying LI, Cui Chen Dai, Ming Qian Jiang. A STUDY ON THE STRUCTURAL EFFECT OF DOUBLE BRIDGES CONJUGATED SYSTEMS I.CARBONYL-IMINO SYSTEM[J]. Chinese Chemical Letters, ;1991, 2(3): 197-200. shu

A STUDY ON THE STRUCTURAL EFFECT OF DOUBLE BRIDGES CONJUGATED SYSTEMS I.CARBONYL-IMINO SYSTEM

Institute of chemistry, Academia sinica, Beijing 100080

Received Date: 3 August 1990

The struetural effect of the conjugative system (C) with carbonyl-imino bridges has been studied. The results show that:In the conjugated system (C), there is no electronic absorption peak attributable to the whole system, but there are three π-π^* bands each of which displays chacactecistics of its own independently. These indicate that the two bridges-carbonyl-and-imino-can block the tlansmlssion of the conjngative polarization of the whole system, so as to form three segments, this is verified by means of chemical synthesis and degradation.
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